change secret for var

Signed-off-by: Javier Rodriguez <javier@chainloop.dev>

Author: javirln

.github/workflows/scm_configuration_check.yaml

@@ -33,7 +33,7 @@ jobs:
         id: generate-token
         uses: actions/create-github-app-token@v2
         with:
-          app-id: ${{ secrets.GATHERER_APP_ID }}
+          app-id: ${{ vars.CHAINLOOP_GATHERER_APP_ID }}
           private-key: ${{ secrets.GATHERER_APP_PRIVATE_KEY }}
 
       - name: Gather runner context data